Patents Represented by Attorney Trexler Bushnell

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  • Screw
    Patent number: 4820098
    Abstract: The screw is provided with a three-lobed thread crest, followed by a threaded portion with a three-lobed thread geometry, which passes into a threaded portion with a circular thread geometry. In all three threaded portions the flank angle of the thread is 60.degree. and the flank angle of the thread crests extending beyond the nominal diameter of the screw is 30.degree..
    Type: Grant
    Filed: May 3, 1985
    Date of Patent: April 11, 1989
    Assignee: Friedr. Boesner GmbH
    Inventors: Hubert Taubert, Rudolf Webendorfer